# 1
# a,b=map(int,input().split())
# if a+b==15:
#     ans='+'
# elif a*b==15:
#     ans='*'
# else:
#     ans='x'
# print(ans)

# 2
X=int(input())

print(8-(X-400)//200) X=int(input()) X int(input()) int input() input print(8-(X-400)//200) print 8-(X-400)//200 8 (X-400)//200 X-400 X 400 200 X=int(input()) int(input()) X
# 1
# a,b=map(int,input().split())
# if a+b==15:
#     ans='+'
# elif a*b==15:
#     ans='*'
# else:
#     ans='x'
# print(ans)

# 2
X=int(input())

print(8-(X-400)//200)